Question
A train running at 25 km/hr takes 36 seconds to pass a
platform. Next, it takes 14 seconds to pass a man walking at 7 km/hr in the same direction. Find the length of the platform.Solution
Which gas is most abundant in Earth's atmosphere?
The mass of an object on moon ________ in comparison to the mass on earth.
What is the main cause of emphysema? Â
Which of the following has the lowest wavelength?
The refractive index of glass is 1.5. What is the speed of light in glass? Speed of light in vacuum is 3.0 x 108 m/s.
Calculate the work done when a force of 10 N moves an object 5 m at 60° angle to direction of force.
Which of the following is/are true about ‘Villi’?
I. They are present in the walls of the small intestine.
II. They contain numerous b...
Which one of the following oxides reacts with both acid and base?
A coil of N turns, and area A is rotated at angular velocity ω in a magnetic field B. Find the maximum induced emf if at t=0 the plane of coil is paral...
The frequency range of human hearing is approximately:
